1. Strongylocentrotus nudus (A. Agassiz);Agatsuma,1991
2. Factors contributing to changes in the population size of the sea urchin, Strongylocentrotus nudus off the coast of Tsugaru Strait, southern Hokkaido;Agatsuma;Suisanzoshoku (Jpn. J. Aquacult.),1994
3. Ecological studies on the population dynamics of the sea urchin Strongylocentrotus nudus;Agatsuma;Sci. Rep. Hokkaido Fish. Exp. Stn.,1997
4. Aquaculture of the sea urchin (Strongylocentrotus nudus) transplanted from coralline flats in Hokkaido, Japan;Agatsuma;J. Shellfish Res.,1998
5. Gonadal growth of the sea urchin, Strongylocentrotus nudus, from trophically poor coralline flats and fed excess kelp, Laminaria religiosa;Agatsuma;Suisanzoshoku (Jpn. J. Aquacult.),1999